2000 Gmc Sierra Heater Doesnt Blow Hot Air Just Warm Air Hoses Warm Running

2000 GMC SIERRA
200,000 MILES
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ANONYMOUS
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  • 1 POST
heater doesnt blow hot air just warm air. hoses are all warm. its running at proper temp what could it be
Mar 4, 2013 at 2:08 PM
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HOMER1967
  • ✓Experienced Mechanic
  • 875 POSTS
i would suspect a restricted heater core or a blend door issue.,
Mar 4, 2013 at 4:29 PM
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